Distance to the Light Source
Your proximity to the NIR light source is important to for your body to absorb the energy. The power density decreases as you move further from the light source. To achieve the maximum physiological affects you should be within 1-2 inches from the light. The small percent of NIR emitted from a halogen heater will have little to no effect because it is physically unbearable to get that close.
In order to make NIR safe for saunas, Sunlighten used NASA research to develop an LED array that provides NIR at a singular wavelength with minimal variability and virtually undetectable heat and light. Our LEDs are strategically placed to give you optimal exposure to NIR therapy. LED does not emit heat and makes it very comfortable and enjoyable to sit and receive therapeutic NIR.